Just want to share my experience - I was trying to be efficient so I checked into Delta on line the night before and paid the baggage fee on line. We arrived to check in area at SSR to check our bags and get the boarding passes printed ( 3 hours prior as they request) and to my surprise they could not take our bags since
I paid the luggage fee ON LINE!!! If I waited and paid when I checked the luggage in at the resort I was told there would not be a problem and it is a Delta issue

We had to lug the luggage back to the parking lot/car rental and do it at the airport - I was so hoping to not have to do that!